If you want privacy over your mail, let me tell you something. Organisations are able to see your message if it is under your organisations. For example, you are just writing a normal message like how are you? It is ok. But it is not ok if you are talking to your girlfriend or boyfriend (other things you dun like others to see) It is about the same like you are messaging and someone is looking behind you. Polytechnics are also organisation and if you are like me who value your privacy, here is the solution.
I would not provide much details but PGP(Pretty Good Privacy) can solve your problem. Learn how to use it and secure your email from peeping toms.
To be truthful, I am quite sad to leave this current batch to join another class. I do not know how to describe it but I would say that it is hard to find a good class like this.
The competitive level is high and there is a spirit of unity which is quite rare.Just hope can get a better class,but seriously doubt so.